A heat-insulating part of a constant-temperature electric hot plate
By installing heat insulation components on the heating plate, the problems of low edge temperature and safety hazards of the constant temperature electric heating plate are solved, achieving temperature stability and operational safety, and making it suitable for industrial testing equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HEZHONGHE TESTING TECHNOLOGY CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-06-19
AI Technical Summary
The existing constant temperature electric heating plate has a lower temperature at the edge during use, which affects the test results and poses a safety hazard. In addition, the open design poses a risk of burns.
A heat insulation component, including a heat-conducting plate and an annular rim, is installed on the heating plate. The heat-conducting plate has upper and lower grooves around its perimeter, and the rim is filled with a layer of rock wool. The surface of the heat-conducting plate is coated with a high-temperature and corrosion-resistant coating to provide heat insulation and protection.
It improves the temperature stability of the heating plate, prevents samples from falling, enhances safety, is suitable for heating strongly acidic solutions, and is more convenient to operate.
Smart Images

Figure CN224371509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial testing equipment technology, and in particular to a heat insulation component for a constant temperature electric heating plate. Background Technology
[0002] During industrial field sampling and testing, some samples need to be taken back to the laboratory for analysis and testing, while others need to undergo preliminary processing on-site. For example, samples may need to be heated and kept at that temperature for a certain period of time, which can be accomplished using a constant-temperature electric heating plate.
[0003] The constant temperature electric heating plate is controlled by a constant temperature control unit to maintain a constant temperature. The constant temperature electric heating plate is an existing device. When in use, after the constant temperature is turned on, a container or sample is placed on the heating plate to heat the container or sample.
[0004] During the heating process, although the heating plate can achieve a so-called constant temperature through software control, the temperature decreases closer to the edge. Therefore, the sample should be placed in the center of the heating plate during heating; otherwise, the low temperature at the edges will affect the test results. Furthermore, the open design of the heating plate poses a safety hazard to operators, such as burns. Utility Model Content
[0005] The purpose of this utility model is to solve the above problems and provide a heat insulation component for a constant temperature electric heating plate. By installing a heat insulation component on the heating plate, the temperature inside the upper groove of the heat-conducting plate can be maintained, and the risk of the sample falling during heating can be prevented, thus ensuring the safety of the operator.
[0006] The technical solution adopted by this utility model is:
[0007] A thermal insulation component for a constant-temperature electric heating plate is characterized in that the constant-temperature electric heating plate includes a heating plate and a constant-temperature control unit, the constant-temperature control unit controls the heating plate to maintain a constant temperature, the thermal insulation component includes a heat-conducting plate, the heat-conducting plate is provided with an annular rim around its perimeter, forming an upper groove and a lower groove on both the top and bottom of the heat-conducting plate, the inner diameter of the annular rim being larger than the size of the heating plate, the lower groove of the heat-conducting plate being fitted onto the heating plate, and the upper groove of the heat-conducting plate being used to place the item to be heated.
[0008] Furthermore, the annular rim is a hollow structure filled with a layer of rock wool.
[0009] Furthermore, the upper surface of the heat-conducting plate is coated with a high-temperature and corrosion-resistant coating.
[0010] Furthermore, the heating plate is square in shape, the heat-conducting plate is also square in shape, and the lower groove of the surrounding edge is fitted onto the square heating plate.
[0011] Furthermore, the heating plate is circular, the heat-conducting plate is also circular, and the lower groove of the rim is fitted onto the circular heating plate.
[0012] Furthermore, the lower surface of the heat-conducting plate is also coated with a high-temperature and corrosion-resistant coating.
[0013] The beneficial effects of this utility model are:
[0014] (1) The upper groove of the heat-conducting plate can prevent the sample from falling;
[0015] (2) The edging has a heat preservation function, which makes the temperature on the heat-conducting plate more stable;
[0016] (3) The high-temperature and corrosion-resistant coating on the heat-conducting plate enables it to be heated by strong acid solutions and resists the corrosion of splashed acid solutions;
[0017] (4) The heat insulation components can be used interchangeably on both sides, making operation more convenient. Attached Figure Description
[0018] Appendix Figure 1 This is a front view schematic diagram of the first embodiment of this utility model;
[0019] Appendix Figure 2 This is a front view schematic diagram of the second embodiment of the present invention;
[0020] Appendix Figure 3 This is a cross-sectional view of the present invention;
[0021] Appendix Figure 4 It is attached Figure 3 A magnified view of a portion of the image.
[0022] The labels in the attached diagram are as follows:
[0023] 1. Heat-conducting plate; 2. Edge banding;
[0024] 3. Upper notch; 4. Lower notch;
[0025] 5. Rock wool layer; 6. Coating. Detailed Implementation
[0026] The following detailed description, in conjunction with the accompanying drawings, describes the specific implementation of a heat insulation component for a constant-temperature electric heating plate according to this utility model.
[0027] The constant-temperature electric heating plate includes a heating plate and a constant-temperature control unit. The constant-temperature control unit controls the heating plate to maintain a constant temperature. This equipment is a mature product on the market and is used for heating samples or reagents during industrial field testing. During heating, liquid samples are placed in a container and then placed on the heating plate, or solid samples are placed directly on the heating plate for heating.
[0028] See appendix Figures 1 to 4 The thermal insulation component includes a heat-conducting plate 1, with an annular rim 2 around its perimeter. This creates upper grooves 3 and lower grooves 4 on both the top and bottom of the heat-conducting plate 1. The connection between the heat-conducting plate 1 and the rim 2 can be achieved through welding, fasteners, or interference fits. The inner diameter of the annular rim 2 is larger than the size of the heating plate. The lower groove 4 of the heat-conducting plate 1 fits onto the heating plate, and the groove 3 on the heat-conducting plate is used to place the item to be heated.
[0029] The annular rim 2 is a hollow structure filled with a layer of rock wool 5. The annular rim 2 can not only provide edge support for the sample and container, but also reduce heat loss at the edge of the heat-conducting plate 1, making the temperature of the heat-conducting plate 1 more constant.
[0030] See appendix Figure 1 The heat insulation component of the first embodiment is for a constant temperature device with a square heating plate. The heat conduction plate 1 and the heating plate are also square. The side length of the perimeter 2 of the heat conduction plate 1 is slightly larger than that of the heating plate. In use, the heat insulation component is fitted onto the heating plate, and the lower groove 4 covers the heating plate to prevent the edge temperature of the heating plate from being lost.
[0031] See appendix Figure 2 The heat insulation component of the second embodiment is for a circular heating plate device. The heat-conducting plate 1 and the heating plate are also circular. The diameter of the perimeter 2 of the heat-conducting plate 1 is slightly larger than the diameter of the heating plate. In use, the heat insulation component is sleeved on the heating plate, and the lower groove 4 covers the heating plate.
[0032] See appendix Figure 3 A high-temperature and corrosion-resistant coating 6 is coated on the upper surface of the heat-conducting plate 1. When a strong acid solution is heated, the splashed droplets can fall onto the heat-conducting plate 1, and the high-temperature and corrosion-resistant coating 6 can reduce corrosion of the heat-conducting plate 1. The high-temperature and corrosion-resistant coating 6 is a material in the prior art, and the coating 6 is formed on the heat-conducting plate 1 by spraying.
[0033] Coating 6 can be applied to both the top and bottom surfaces of the heat-conducting plate 1. When the heat-conducting plate 1 is placed on the heating plate, there is no need to distinguish between the top and bottom surfaces. It can achieve functions such as heat preservation and heat insulation whether it is placed on the heating plate in the right or wrong direction.
[0034] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A heat insulation component for a constant-temperature electric heating plate, characterized in that: The constant temperature electric heating plate includes a heating plate and a constant temperature control unit. The constant temperature control unit controls the heating plate to maintain a constant temperature. The heat insulation component includes a heat-conducting plate. The heat-conducting plate is surrounded by an annular rim, forming an upper groove and a lower groove on both the top and bottom of the heat-conducting plate. The inner diameter of the annular rim is larger than the size of the heating plate. The lower groove of the heat-conducting plate is fitted onto the heating plate. The upper groove of the heat-conducting plate is used to place the item to be heated.
2. The thermal insulation component of a constant-temperature electric heating plate according to claim 1, characterized in that: The annular rim is a hollow structure filled with a layer of rock wool.
3. The thermal insulation component of a constant-temperature electric heating plate according to claim 1, characterized in that: The upper surface of the heat-conducting plate is coated with a high-temperature and corrosion-resistant coating.
4. The thermal insulation component of a constant-temperature electric heating plate according to any one of claims 1 to 3, characterized in that: The heating plate is square in shape, and the heat-conducting plate is also square in shape. The lower groove of the surrounding edge is fitted onto the square heating plate.
5. The thermal insulation component of a constant-temperature electric heating plate according to any one of claims 1 to 3, characterized in that: The heating plate is circular, and the heat-conducting plate is also circular. The lower groove of the rim is fitted onto the circular heating plate.
6. The thermal insulation component of a constant-temperature electric heating plate according to claim 3, characterized in that: The lower surface of the heat-conducting plate is also coated with a high-temperature and corrosion-resistant coating.